#footer {
    margin: 0 auto;
    position: absolute;
    left: 0px;
    bottom: 0px;
    width: 100%;
    height: 150px;
    display: table;
    background: rgba(0, 0, 0, 0.3);
}

#footer ul {
    list-style: none;
    margin: 0px;
    padding: 0px;
    display: table-cell;
    vertical-align: middle;
}

#footer ul li {
    float: left;
    width: 33.33%;
}

.cell {
    margin: 0 auto;
    width: 90px;
    line-height: 90px;
    background-color: green;
    border-radius: 45px;
}

.cell a {
    color: white;
    text-decoration: none;
}